Add. 18 5/12 + 8 10/17 + 23 7/12 + 28 7/17 (which answer is it? ) a. 77 b. 77 1/2 c. 78 1/2 d. 79

the answer is 18 5/12 + 8 10/17 + 23 7/12 + 28 7/17= A.77

The answer is 79 your welcome...

what do you mean by fog

step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐